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Forwarding equivalence class
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A '''forwarding equivalence class''' ('''FEC''') is a term used in [[Multiprotocol Label Switching]] (MPLS) to describe a set of packets with similar or identical characteristics which may be forwarded the same way; that is, they may be bound to the same MPLS label. Characteristics determining the FEC of a higher-layer packet depend on the configuration of the router, but typically this is at least the destination IP address. [[Quality of service]] class is also often used. Thus, a '''forward equivalence class''' tends to correspond to a [[label-switched path]] (LSP). The reverse is not true, however: an LSP may be (and usually is) used for multiple FECs. ==References== * [https://www.cisco.com/c/en/us/support/docs/multiprotocol-label-switching-mpls/mpls/4649-mpls-faq-4649.html#anc4 MPLS FAQ For Beginners: What is a Forwarding Equivalence Class (FEC)?] * [https://www.networkworld.com/article/2350449/understanding-the-role-of-fecs-in-mpls.html Understanding the Role of FECs in MPLS] [[Category:MPLS networking]] {{compu-network-stub}}
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